Motion is relative. Which of the following best describes this statement?

The motion of an object depends on the reference frame that is chosen

The motion of an object doesn’t depend on the reference frame that is chosen.

The reference frame has nothing to do with the object’s motion.

In which of the following conditions does the car NOT accelerate?

a car moves at a constant speed of 80 km/hr on a flat, straight highway

The car slows from 80 km/h to 35 km/h

The car speeds up from 35 km/hr to 80 km/h

If a car, semi-truck, and a motorcycle all have the same velocity, which has the greatest momentum?

They all have the same momentum

Cars A, B, & C are traveling counterclockwise at the same, constant speed around the track. Which of the following best describes why one of these cars would experience a change in velocity first?

this car will be the first car to change it's direction.

this car will be the first car to change it's speed

this car will be the first to cross the finish line.

Cars A, B, & C are traveling counterclockwise at the same, constant speed around the track. Which of the following best explains why one of these cars would experience a change in acceleration last?

Car A will change it's acceleration last because it will be the last car to change its direction

Car B will change its acceleration last because it will be the last car to change its direction

Car C will change its acceleration last because it will be the last car to change its direction.

Which of the following best describes a scenario in which two objects traveling at the same speed have different velocities?

Two cars traveling 70 mph on opposite sides of the highway (one is going south, one is going north)

Two cars traveling down the highway, one is slowing down, one is going a constant speed

This is not possible because the objects would be going the same speed.

Imagine you're riding in a car traveling down a highway. Relative to the car are you in motion? Why?

No, you are not in motion because you're sitting still in the moving car

Yes, you are in motion because you're in a moving car

Imagine you're riding in a car traveling down a highway. Relative to the road are you in motion? Why?

Yes, you are in motion because you're in a moving car and the road is stationary

No, you are not in motion because you're sitting still in the moving car

What are the three ways an object can accelerate?

speed up, slow down, change direction

Select any of the following that best explains how friction can be decreased on a surface? (can be multiple answers)

Add a lubricant (oil or wax) to the surface

Smooth the surface down by sanding or polishing

Unit 7- Forces & Motion

Authored by Ashley Cox

Physics

9th Grade

NGSS covered

Used 4+ times

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

__ includes the speed of an object and the direction of motion.

velocity

speed

momentum

displacement

friction

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

__ is the distance and direction of the object’s change in position.

displacement

speed

velocity

momentum

friction

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

__ is a push or a pull that can cause an object to move.

force

speed

velocity

momentum

displacement

____ is the acceleration towards the center of a curved or circular path.

centripetal acceleration

speed

velocity

momentum

displacement

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

__ of an object is the product of its mass and velocity.

momentum

speed

velocity

displacement

friction

__ is the distance an object travels per unit of time.

speed

velocity

momentum

displacement

friction

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

__ is the rate of change of velocity per unit of time.

acceleration

speed

velocity

momentum

displacement

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Unit 7- Forces & Motion

__ includes the speed of an object and the direction of motion.

__ is the distance and direction of the object’s change in position.

__ is a push or a pull that can cause an object to move.

____ is the acceleration towards the center of a curved or circular path.

__ of an object is the product of its mass and velocity.

__ is the distance an object travels per unit of time.

__ is the rate of change of velocity per unit of time.

__ is the force that opposes the sliding motion of two surfaces that are touching each other.

__ is a change in an object’s position relative to a reference point.

__ the sum of all forces acting on an object.

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